Collapse behavior and microstructural evolution of loess soils from the Loess Plateau of China
| 作者： | Wan-li Xie, Ping Li, Mao-sheng Zhang, Tian-e Cheng, Yong Wang |
| 作者单位： |
1State Key Laboratory of Continental Dynamics, Northwest University 2Department of Geology, Northwest University 3Key Laboratory for Geo-hazard in Loess Area, Ministry of Land and Resources, Xi’an Center of China Geological Survey 4College of Urban and Environmental Sciences, School of Foreign Languages, Northwest University |
| 刊名： | Journal of Mountain Science, 2018, Vol.15 (8), pp.1642-1657 |
| 来源数据库： | Springer Journal |
| DOI： | 10.1007/s11629-018-5006-2 |
| 关键词： | Loess; Collapse; Microstructure; Scanning electron microscopy; Image processing; Pore morphology properties; |
| 英文摘要： | Abstract(#br)Loess soils are characterized by metastable microstructure, high porosity and water-sensitivity. These soils have always been problematic soils and attracted attention from researchers all over the world. In the present study, three loess soils extracted at various depths from the Loess Plateau of China, i.e. Malan (Q 3 ), upper Lishi (Q 2 2 ) and lower Lishi (Q 2 1 ) loess soils, were studied. Single oedometer-collapse tests were performed on intact loess specimens to investigate the collapse behavior of three loess soils. The microstructure and chemical composition of each loess before and after collapse test were characterized using scanning electron microscopy (i.e. SEM) and energy dispersive spectroscopy (i.e. EDS) techniques. The microstructural evolution due to wetting... |
